Weak direct current measuring device and method

The invention belongs to the technical field of quantum spin detection, and discloses a weak direct current measuring device and method, and the device comprises a heating module which is used for heating an atomic gas chamber, and achieves the preparation of an atomic spin state; the pump light is...

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Bibliographic Details
Main Authors FAN JINCHUAN, YAN DONGCHAO, ZHANG HAO, LEI XING
Format Patent
LanguageChinese
English
Published 15.03.2024
Subjects
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:The invention belongs to the technical field of quantum spin detection, and discloses a weak direct current measuring device and method, and the device comprises a heating module which is used for heating an atomic gas chamber, and achieves the preparation of an atomic spin state; the pump light is used for pumping polarization; the DDS module outputs alternating-current resonance magnetic field frequency source signals with the same amplitude and continuously changing frequency to a transverse magnetic field of the magnetic field module; a longitudinal magnetic field is connected to a current to be measured, a transverse magnetic field is connected to an alternating-current resonance magnetic field frequency source signal, and a 131Xe atom nuclear magnetic resonance working frequency point is determined; the probe light is used for realizing atomic magnetic moment detection in the atomic gas chamber; the photoelectric conversion module realizes conversion from an optical signal to an electric signal; the A/D
Bibliography:Application Number: CN202311729484